Poorly rose?

Is there anything I should or could be doing to help roses like this one?

I gave them all a feed a month or so ago and a good spray of rose clear when the yellow leaves and black spot started but suddenly today this one has decided to drop a bit.

Admittedly I haven't watered it as it's been raining but I have just given it a drop. Is there anything else I can do to try and prevent black spot and yellowing?

Many thanks

 

That pot looks a bit small and there isn't much compost in it.
I'd put it in a bigger pot with some John Innes

 

Yeah I was wondering if it needs some nutrients but wasn't sure what. Up until yesterday it was doing well but it was moved and today looked like that.

Is it right that the compost should cover the the knuckle (or whatever you call it) of the rose?

 

I agree with @BB3. A pot twice that size filled to within an inch of the top with John Innes No 3 loam based growing medium with a bit of well rotted manure mixed into it.

Remember that with most plants there’s nearly as much growth below the surface as above!

Also, if a pot is in the rain shadow of a wall or fence you can’t rely on rain to provide enough water … you really do need to check every few days .., push your ginger into the soil up to the first joint … if it’s not damp down there it needs watering. And a good soaking twice a week is better than a little every day.

 

Ok thanks, the nursery did tell us the pot would be ok but I'll definitely get some more compost anyway.

Been doing a lot of work landscaping the garden so they've kind of been left and all the others ok, just noticed this one today.

And thanks @Dovefromabove I'll have to find a 'ginger' to test the water

 

Just seen a Levingtons Organic Peat Free Farmyard Manure for about £7 is this ok to mulch in around the top as well as the John Ines 3? Might as well do all my front garden ones as well

 

Whoops! Obviously a bit of Fat Ginger syndrome

 

It looks too dry to me. No good feeding it if the soil is too dry. It will need potting on to a bigger pot but I wouldn't do it while it's in full flower. Rain isn't enough for plants in pots.

 

Another reason could be vine weevil grubs eating the roots. Give it a good water first to see if it picks up. If it doesn't look any better after 2 or 3 days then ease it out of the pot and see if there are any vine weevil grubs in the compost.

 

Yep I've given it a soak. Thinking about it I think it was against the garage wall so probably not getting hit with rain.

Spent the last month ripping up the remnants of our 10th year of leatherjackets and replacing with sleepers and gravel so they have been moved about a lot

 

And as for healthy roses, really the boring but truthful answer is to improve the growing conditions...sprays are not the answer sadly, as all you do is put off the presentation of the issue when it's just there waiting to manifest itself. I used to be a Rose Clear user at the start but haven't touched the stuff in over 15 years.

 

Ideally yes just need to work out the best way including our front planted ones that get infected badly

 

I would look at its roots. Probably root bound. If the roots are taking up the whole pot then it can't get the water you give it. I would use Sulphur Rose for fungal diseases like blackspot and mildew. Vine weevil larvae should have mostly turned into adults at this time of year, but worth checking, and also check for adults.

i think nurseries tend to say you can keep potted roses in their 3 or 4 litre pots for a few weeks, but they do need to be transferred into bigger pots after that.

I would treat myself to a beautiful big pot, a big bag of potting compost, and handfuls of perlite and grit.

 

well fortunately it's looking better again now although I have bought some compost and blended manure to add to the pots and the half a dozen I have in beds in the front garden.

The ones in the front have bark around them, should I be trying to pull this back before applying the manure/compost or can I just put it on top. I think we were looking at getting more bark anyway